JP2012099257A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of dispensing with a fastener for fastening electric wires and easily rotating (swinging) a lamp fitting.SOLUTION: In the lighting fixture 10, a front frame 26 is arranged in front of a heat sink 21, and a front of LED light sources is covered with the front frame since the LED light sources 18 are arranged between the front frame and the heat sink. The lighting fixture 10 includes a first electric wire passage 38 arranged at a lower part 24 of the heat sink to enable to route electric wires 31 of the LED light sources, an erected wall 45 for covering the first electric wire passage by projecting from the front frame toward the heat sink, and a second electric wire passage 41 which can route the electric wires routed to the first electric wire passage to the outside through fins 23 of the heat sink.

Description

  The present invention relates to a lighting fixture that is embedded in a ceiling surface using an LED as a light source and is applied to a downlight as an example.

  2. Description of the Related Art Conventionally, there is known a lighting fixture in which a lens is attached to a substrate on which an LED light source is mounted (LED mounting substrate), and light emitted from the LED light source is distributed by the lens and irradiated (for example, Patent Literature) 1).

JP 2010-49830 A (FIG. 9, paragraph 0022)

Here, as for the lighting fixture, the LED light source is normally provided between the heat sink for heat radiation and the front frame. Electric wires (codes and lead wires) are connected to the LED light source, and the connected electric wires are routed to the power source along the outer surface of the lighting fixture using a plurality of fasteners.
As described above, since a plurality of fasteners for routing the electric wires from the LED light source to the power source are required, it has been an obstacle to reducing the number of parts.
Furthermore, it is conceivable that when the lamp of the lighting fixture is rotated (swinged), the electric wires routed along the outer surface of the lighting fixture prevent the lighting fixture from rotating.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus that can eliminate the need for a fastener for routing an electric wire and can easily rotate the lamp. There is to do.

  The lighting fixture of the present invention is a lighting fixture in which a front frame is provided in front of a heat sink, and an LED light source is provided between the front frame and the heat sink so that a front surface of the LED light source is covered with the front frame. A first electric wire passage provided in a lower portion of the heat sink and capable of routing an electric wire of the LED light source; a standing wall covering the first electric wire passage by projecting from the front frame toward the heat sink; and the first And a second electric wire passage capable of routing the electric wire routed in the electric wire passage to the outside through the fins (in the central portion) of the heat sink.

According to the lighting fixture of the present invention, the first electric wire passage is provided in the lower part of the heat sink, and the second electric wire passage is provided in the fin (in the center portion) of the heat sink.
And the electric wire (code | cord | lead, lead wire) of the LED light source was routed in the 1st electric wire channel | path, and the electric wire wired in the 1st electric wire channel | path was made to be wired outside via the 2nd electric wire channel | path.

Therefore, it is not necessary to wire the LED light source using a plurality of fasteners. This eliminates the need for a plurality of fasteners for routing the electric wires of the LED light source, thereby reducing the number of parts of the lighting fixture.
Furthermore, the electric wire routed in the first electric wire passage can be protected by the vertical wall by covering the first electric wire passage with the standing wall provided in the front frame.

The lighting fixture of the present invention is provided with the first electric wire passage in the lower part of the heat sink, the second electric wire passage in the fin (in the central portion) of the heat sink, and the electric wire of the LED light source in the first and second electric wire passages. I was allowed to route.
Therefore, since the electric wire of the LED light source can be routed in the lamp, the electric wire of the LED light source can be prevented from obstructing the rotation of the lamp when the lamp is rotated with respect to the frame and the direction of the lamp is adjusted. .
Accordingly, the lamp can be easily rotated with respect to the frame, and the direction of the lamp can be adjusted without taking time.

The perspective view which shows the lighting fixture which concerns on this invention The disassembled perspective view which shows the lighting fixture of FIG. Part A enlarged view of FIG. BB sectional view of FIG. The front view which shows the lighting fixture of FIG. Part C enlarged view of FIG. The perspective view seen from the front upper side which shows the lighting fixture of FIG. Part D enlarged view of FIG.

  Hereinafter, a lighting fixture according to an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the lighting fixture 10 which is embodiment of this invention is provided with the frame 11 and the lamp | ramp 15 provided in the frame 11 so that a swing was possible.
As an example, the luminaire 10 is a luminaire that is applied to a downlight with a frame 11 embedded in an attachment hole such as a ceiling surface.

The frame 11 includes an annular portion (cylindrical portion) 12 formed in a substantially annular shape, and a plurality of attachment springs 13 provided on the annular portion 12.
The flange 12A of the annular portion 12 is a portion that positions the frame 11 (that is, the lighting fixture 10) on the ceiling surface by contacting the lower surface of the ceiling surface with the annular portion 12 being inserted into the mounting hole.

The attachment spring 13 is elastically deformed along the annular portion 12 when the annular portion 12 is inserted into the attachment hole of the ceiling surface from below, the annular portion 12 is inserted into the attachment hole, and the flange 12A is formed on the lower surface of the ceiling surface. It is a member that retains the annular portion 12 in the mounting hole by being elastically restored so as to increase the outer diameter of each after contact.
A lamp 15 is supported in the frame 11 so as to be swingable.

As shown in FIG. 2, the lamp 15 includes a lamp main body 16 in which a plurality of LED light sources 18 are mounted on the surface of the LED mounting substrate 17, and a heat sink 21 for heat dissipation provided above (backward) the lamp main body 16. And a front frame 26 provided below (front) the lamp body 16.
That is, the front frame 26, the heat sink 21, and the plurality of LED light sources 18 are integrated together as the lamp 15.

The lamp body 16 has a plurality of LED light sources 18 mounted on an LED mounting board 17 and is provided between the heat sink 21 and the front frame 26.
The back surface 17 </ b> A of the LED mounting substrate 17 faces the lower surface of the heat sink 21, and the plurality of LED light sources 18 are covered with the front frame 26.
A pair of electric wires (codes and lead wires) 31 are drawn out from the LED mounting substrate 17. The pair of electric wires 31 are connected to the plurality of LED light sources 18.

As shown in FIGS. 2 and 3, the heat sink 21 includes a heat sink body 22 that faces the back surface 17 </ b> A of the LED mounting substrate 17, and a plurality of fins 23 that are integrally formed with the heat sink body 22.
The heat sink main body 22 has a substantially disk-shaped lower portion 24 facing the back surface 17A of the LED mounting substrate 17, a pair of recesses 32 formed on the outer periphery 24A of the lower portion 24, and mounting holes (mounting recesses) between the pair of recesses 32. ) 33 is formed.
The attachment hole 33 is a hole for attaching the lower portion 24 of the heat sink body 22 to the upper end portion 26A of the front frame 26 with a bolt 34 (see FIG. 7).

The pair of recesses 32 are engagement recesses into which the pair of electric wires 31 drawn from the back surface 17A of the LED mounting substrate 17 can be engaged.
A plurality of fins 23 are provided between the pair of recesses 32.
The plurality of fins 23 between the pair of recesses 32 are each formed with a recess 36 in the lower portion 23 </ b> A, whereby a first wire passage 38 is formed in each recess 36 and the lower part 24 of the heat sink body 22. The

As shown in FIG. 4, the first wire passage 38 is formed to have a height dimension H <b> 1 facing the lower portion 24 of the heat sink body 22, and to a depth dimension L <b> 1 with respect to the outer periphery 24 </ b> A of the lower portion 24. .
A pair of wires 31 engaged with the pair of recesses 32 shown in FIG. 4 is routed in the first wire passage 38.
That is, the first electric wire passage 38 in which the electric wire 31 of the LED light source 18 can be routed is provided in the lower portion 24 of the heat sink 21.
Therefore, the pair of electric wires 31 drawn out from the back surface 17A of the LED mounting substrate 17 shown in FIG. 2 is routed in the first electric wire passage 38 through the pair of recesses 32.

As shown in FIGS. 5 and 6, the second electric wire passage 41 is provided between the adjacent fins 23 at substantially the center among the plurality of fins 23 facing the first electric wire passage 38. A protective tube 42 is provided in the second electric wire passage 41.
The wire 31 routed in the first wire passage 38 is routed in the protection tube 42 of the second wire passage 41 in the protection tube 42.

The electric wires 31 arranged in the protection tube 42 are arranged outside the heat sink 21.
That is, a second electric wire passage 41 that can wire the electric wire 31 routed in the first electric wire passage 38 to the outside is provided between the fins 23 </ b> B in the center of the fins 23 of the heat sink 21.

The 2nd electric wire channel | path 41 is formed in the dimension into which the width dimension W1 does not enter a finger.
Thereby, when attaching the luminaire 10, it is possible to prevent a finger from entering the second electric wire passage 41 and touching the electric wires 31 in the second electric wire passage 41.

As shown in FIGS. 7 and 8, the first electric wire passage 38 is provided in the lower portion 24 of the heat sink body 22, and the second electric wire passage 41 is provided in the fin 23 (in the central portion) of the heat sink 21.
And the electric wire 31 of the some LED light source 18 (refer FIG. 2) is routed in the 1st electric wire channel | path 38, the electric wire 31 wired in the 1st electric wire channel | path 38 passes through the 2nd electric wire channel | path 41, and the exterior of the heat sink 21 I tried to route it.
Therefore, it is not necessary to route the electric wires 31 of the plurality of LED light sources 18 using a plurality of fasteners. As a result, a plurality of fasteners for routing the electric wires 31 of the plurality of LED light sources 18 can be eliminated, and the number of parts of the lighting fixture 10 can be reduced.

As shown in FIGS. 4 and 6, a front frame 26 is provided below (frontward) the heat sink 21. The front frame 26 is accommodated in the frame 11 shown in FIG. 2, and is rotatably supported in the frame 11 by a support shaft.
Therefore, the lamp 15 is provided in the frame 11 so as to be able to swing.
For this reason, when the lamp 15 is rotated with respect to the frame 11 and the direction of the lamp 15 is adjusted, it is considered that the electric wires 31 of the plurality of LED light sources 18 (see FIG. 2) prevent the lamp 15 from rotating. It is done.

Therefore, as described above, the first electric wire passage 38 is provided in the lower portion 24 of the heat sink 21, and the second electric wire passage 41 is provided between the fins 23 </ b> B at the center of the heat sink 21.
Then, the electric wires 31 of the plurality of LED light sources 18 (see FIG. 2) are routed in the first electric wire passage 38 and the second electric wire passage 41.

Therefore, since the electric wires 31 of the plurality of LED light sources 18 can be routed in the lamp 15, the lamp 15 is rotated with respect to the frame body 11 (see FIG. 2) to adjust the direction of the lamp 15. There is no possibility that the electric wire 31 of the LED light source 18 hinders the rotation of the lamp 15.
Thereby, the lamp 15 can be easily rotated with respect to the frame body 11, and the direction of the lamp 15 can be adjusted without taking time and effort.

As shown in FIGS. 2 and 6, the front frame 26 is an annular body formed in an annular shape so as to cover the lamp 15, and the upper end portion 26 </ b> A is fitted to the lower portion 24 of the heat sink body 22.
A pair of upright walls 45 project from the portion of the upper end portion 26 </ b> A of the front frame 26 facing the first electric wire passage 38 toward the heat sink 21.
As shown in FIG. 7, the pair of standing walls 45 are provided on both sides of the bolt 34. By providing the pair of standing walls 45 on both sides of the bolt 34, a space for attaching and detaching the bolt 34 can be secured.

Here, as shown in FIG. 4, the 1st electric wire channel | path 38 is formed in the depth dimension L1. Therefore, the electric wire 31 is routed inside the standing wall 45 in a state where the standing wall 45 is projected from the upper end portion 26 </ b> A of the front frame 26.
Furthermore, the upper end 45 </ b> A of the standing wall 45 is located above the electric wire 31.
Accordingly, the first electric wire passage 38 (that is, the electric wire 31) can be covered with the standing wall 45 protruding from the upper end portion 26A of the front frame 26, and the electric wire 31 can be protected by the standing wall 45.

Further, as shown in FIG. 6, the standing wall 45 has a height dimension H <b> 2 from the upper end portion 45 </ b> A to the recessed portion 36 (see also FIG. 4) of the lower portion 23 </ b> A of the fin 23 so that the finger does not enter. Is formed.
Thereby, when attaching the lighting fixture 10, a finger | toe can penetrate | invade from the space between the upper end part 45A of the standing wall 45, and the recessed part 36 of the fin 23, and it can prevent touching the electric wire 31 in the 1st electric wire channel | path 38. FIG.

In addition, the lighting fixture which concerns on this invention is not limited to embodiment mentioned above, A change, improvement, etc. are possible suitably.
For example, the shapes and configurations of the lighting fixture, LED light source, heat sink, fin, front frame, electric wire, first electric wire passage, second electric wire passage, and standing wall used in the embodiment are not limited to those illustrated, but are appropriately changed. Is possible.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 18 LED light source 21 Heat sink 23 Fin 24 Lower part of heat sink 26 Front frame 31 Electric wire 38 First electric wire passage 41 Second electric wire passage 45 Standing wall

Claims (1)

In a lighting fixture in which a front frame is provided in front of a heat sink, and an LED light source is provided between the front frame and the heat sink so that the front surface of the LED light source is covered with the front frame.
A first electric wire passage provided under the heat sink and capable of routing the electric wire of the LED light source;
A standing wall that covers the first electric wire passage by projecting from the front frame toward the heat sink;
A lighting apparatus comprising: a second electric wire passage capable of routing the electric wire routed in the first electric wire passage to the outside through a fin (in the central portion) of the heat sink.

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